Remove membrane from back of ribs. Cut one lemon in half and rub on both sides of ribs. Sprinkle Hasty Bake rub on ribs. Grill over direct heat for 30 minutes. Start with bone side down and turn them a few times. Keep firebox between sear and bake.(250 to 300 degrees). Fuel should be lump charcoal. (Hasty Bake or Royal Oak brand). Get some grill marks on ribs. In a sauce pan combine butter, lemon juice from the other two lemons ,wostershire sauce, and hot sauce, and a pinch of rub. Let this simmer for ten minutes. Paint this sauce on ribs while they continue to cook. Keep turning the ribs as you baste them. Cook ribs for 20 to 25 minutes longer. Take ribs off pit and wrap in foil. Let them rest for ten minutes. For more tender ribs put them in an ice chest for thirty minutes to an hour. Cut and serve.